<template>
  <div>
    <!-- 面包屑 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item><a href="/">报表管理</a></el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card class="box-card">
      <!-- 为 ECharts 准备一个定义了宽高的 DOM -->
      <div id="main" style="width: 600px;height:400px;"></div>
    </el-card>
  </div>
</template>

<script>
  // import echarts from 'echarts'
  import _ from 'lodash'
  export default {
    components: {},
    data() {
      return {
        options: {
          title: {
            text: '用户来源'
          },
          tooltip: {
            trigger: 'axis',
            axisPointer: {
              type: 'cross',
              label: {
                backgroundColor: '#E9EEF3'
              }
            }
          },
          grid: {
            left: '3%',
            right: '4%',
            bottom: '3%',
            containLabel: true
          },
          xAxis: [{
            boundaryGap: false
          }],
          yAxis: [{
            type: 'value'
          }]
        }
      };
    },
    created() {

    },
    //页面元素加载完成
    mounted() {
      this.initEcharts()
    },
    methods: {
      async initEcharts() {
        // 基于准备好的dom，初始化echarts实例
        const myChart = this.$echarts.init(document.getElementById('main'));
        const {
          data: res
        } = await this.$http.get('reports/type/1');
        if (res.meta.status !== 200) return this.$msg.error('获取失败!');
        // 指定图表的配置项和数据
        const reports =  _.merge(res.data, this.options)
        
        // 使用刚指定的配置项和数据显示图表。
        myChart.setOption(reports);
      }
    },
  }
</script>
<style lang='less' scoped>

</style>
